package com.kfm.servlet;


import com.wf.captcha.utils.CaptchaUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/captcha")
public class CaptchaServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 将之前的验证码清空
        CaptchaUtil.clear(req);
        // 生成验证码并将其内容放到 session 中
        CaptchaUtil.out(4, req, resp);
    }
}
